The high-voltage name of the legendary rock band AC/DC was inspired by a household appliance. Brothers Malcolm and Angus Young were looking for a name that captured the energy and power of their music. Their sister, Margaret Young, noticed the initials 'AC/DC' on the back of her sewing machine, which stands for 'alternating current/direct current.' The brothers felt this perfectly symbolized their raw, electric sound. To further emphasize the theme, the band adopted a lightning bolt as their logo, designed by Gerard Huerta in 1977. While the band saw it as a symbol of power, they were initially unaware that in some cultures, the term had slang connotations. Regardless, the name stuck, and AC/DC went on to record 'Back in Black,' the second best-selling album in history.